Michael Grefe @michaelgrefe.bsky.social Physicist in research management at Universität Hamburg (@uni-hamburg.de). Scientific manager of the Cluster of Excellence Quantum Universe.
Nils Minkmar @nminkmar.bsky.social Autor
Süddeutsche Zeitung
Der siebte Tag/steady
Montaignes Katze
Meine Threema-ID: https://threema.id/TMT5SBWM
AstroBin @astrobin.com Home of Astrophotography since 2011.
Jen "Dr Dust" Millard @drjenimillard.bsky.social Extragalactic astronomer | Sci-Com | Co-presenter @AwesomeAstroPod | Public speaker (inbox requests) | Lecturer | Cruise speaker | Managing Editor Fifth Star Labs Sky Guide (Apple) 🌌 | Infrequently BBC 📺 & 📻 | TedxCardiff | Lego builder | Owned by a cat
John Forbes @redshiftless.bsky.social Astronomer in Aotearoa/New Zealand at the University of Canterbury.
Pusher of pixels, pens, arrays, and computer keys.
www.johncforbes.com
Kalaga venu Madhav @k-alaga.bsky.social Astrophotonicist https://www.aip.de/en/members/kalaga-madhav/
SadrAstro Observatory @sadrastro.com Skeeting across the cosmos. #space #astronomy #astrophotography #science - Join our Online Observatory based in Texas offering downloads of our beautiful dark-sky wide-field and DSO data sets. https://sadrastro.com
Jodrell Bank @jodrellbank.bsky.social Radio astronomy observatory, research centre, UNESCO World Heritage site, beautiful visitor galleries, free parking, and great coffee 😀📡🌟
🔗 https://www.jodrellbank.net/
Banner © Dr Anthony Holloway
Christian Vocks @cvocks.bsky.social Physicist, solar radio astronomy and space plasma theory & simulation, from Lingen in NW Germany, interests in astrophotography, sci-fi, running.
Haifeng Wang @astrohaifeng.bsky.social Love the Milky Way-Local Universe-Disk Systems-Dark Matter-New Physics with Data-Model-Simulations-Instruments. Love sports and history and travel, etc. Personal ORCID: https://orcid.org/0000-0001-8459-1036
Noam Libeskind @cosmicwebmaster.bsky.social Self imposed exile from the other social media
Royal Astronomical Society @royalastrosoc.bsky.social www.ras.ac.uk
ARRAKIHS @arrakihs-mission.eu ARRAKIHS Mission Consortium official account
A new light on dark matter 🌌🔭 | #ARRAKIHSMission🚀 |
https://arrakihs-mission.taplink.ws/
ESA Space Science @science.esa.int Keeping you posted on space science activities from the European Space Agency.
Web: http://www.esa.int/science
Privacy Notice: esa.int/connectwithus
#astronomy #space #science
Matthieu Schaller @mschaller.bsky.social Lecturer in numerical cosmo @ LION+STRW Leiden University. Lead dev. of @swiftsimulation.bsky.social astro and cosmology code. #HPC. Creator of fake universes; all including cheese. 🇨🇭
www.matthieuschaller.com
Claudia Lagos @cdplagos.bsky.social Astronomer and associate professor at the University of Western Australia.
Matthias Kadler @matthiaskadler.bsky.social Professor für Astrophysik, JMU Würzburg
Dr. Julián D. Alvarado-Gómez @astroraikoh.bsky.social Scientist and former Karl Schwarzschild fellow at the Leibniz Institute for Astrophysics Potsdam. Previously, postdoctoral researcher at the Center for Astrophysics | Harvard & Smithsonian and PhD Student at the European Southern Observatory.
Leibniz-Institut für Astrophysik Potsdam (AIP) @aippotsdam.bsky.social Astrophysikalische Grundlagenforschung von der Untersuchung unserer Sonne bis zur Entwicklung des Kosmos.
Webseite: www.aip.de
Til Birnstiel @birnstiel.bsky.social Professor for Astrophysics at LMU Munich. www.til-birnstiel.de
Scott Kay @scott-kay.bsky.social Professor of Astrophysics, University of Manchester
Bernd Flachsbart @bflachsbart.bsky.social Regular lender on kiva.org | Favourite place on earth: Vaucluse, France 🇫🇷 | Thumbs up: Road cycling 🚴♀️ Hard & heavy music 🤘 Astrophotography 🔭✨
René Heller @drreneheller.bsky.social Team Lead Research & Development, PLATO Mission of ESA 🚀, Max Planck Institute for Solar System Research | Lecturer for astrophysics, University of Göttingen
Francesca Fragkoudi @astrofrancesca.bsky.social Astrophysicist | Associate Professor & UKRI FLF at the Institute for Computational Cosmology, Durham | Interested in: galaxies; dynamics; bars; dark matter; science4peace; cats (not necessarily in that order) | Cypriot #κυπραία #kıbrıslı
National Radio Astronomy Observatory - NSF NRAO @thenrao.bsky.social The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation. #RadioAstronomy
📡 VLA, ALMA, VLBA, GBT, ngVLA
🔗 public.nrao.edu
Nature Astronomy @natastron.nature.com A Nature journal dedicated to presenting the very best research across the disciplines of astronomy, astrophysics, cosmology and planetary science.📡
www.nature.com/natastron
Daniel Pomarède @pomarede.bsky.social Cosmographer at Univ. Paris-Saclay | mapping the Universe | co-discoverer of Laniakea (our home supercluster of galaxies), Hoʻoleilana, and some other (very) large scale structures
📖 https://orcid.org/0000-0003-2038-0488
▶️ https://vimeo.com/pomarede
The Astrosky Ecosystem @astrosky.eco We're building new social media tools for astronomers and astronomy enthusiasts online - from feeds to account hosting.
Website: https://astrosky.eco | GitHub: https://github.com/the-astrosky-ecosystem
Account managed by @emily.space
Emily Hunt @emily.space Postdoc @univie.ac.at working on star clusters & machine learning.
Also: open web developer & enthusiast, working on @astrosky.eco and more
🏳️🌈 🏳️⚧️ (she/her), Ⓥ
Website: https://emily.space
GitHub: https://github.com/emilyhunt
European Space Agency @esa.int Elevating the future of Europe through space.
Please see our Privacy Notice: https://esa.int/connectwithus
Kris Eriksen @keriksen.bsky.social Accidental theorist, displaced Bostonian, NM high desert runner, physicist, extronomer. He/him
Anger is a gift
Bernard Schutz @bschutz.bsky.social Astrophysicist, author, grandfather. Have lived in USA, Wales, Germany, Italy. FRS, NAS. Views my own.
Barbara Ryden @bsryden.bsky.social Writer of astrophysics textbooks, servant to cats
Geraint F. Lewis @cosmichorizons.bsky.social Cosmologist & Galactic Archaeologist at
@Sydney_Uni. Proud Silurian, Australian immigrant, & author of books about the strange universe we find ourselves in!
Rychard Bouwens @introspectrych.bsky.social Astrophysicist. Loves being lost and how alive it feels. Enjoys witnessing courageous authenticity and random acts of kindness.
Max Planck Institute for Solar System Research @mpsgoettingen.bsky.social Max Planck Institute for Solar System Research: Cutting edge scientific research on our Sun, the planets and their moons, asteroids and comets.
David Montes @dmontesg-astro.bsky.social Prof. Dpto. Física de la Tierra y Astrofísica, Facultad CC. Físicas, Universidad Complutense de Madrid, UCM.
IPARCOS-UCM (Instituto de Física de Partículas y del Cosmos de la UCM)
Ver: https://produccioncientifica.ucm.es/investigadores/141512/detalle
GaiaUB @gaiaub.bsky.social Gaia group @ Universitat de Barcelona (UB) Dpt FQA, Institut de Ciències del Cosmos (ICC), Institut d'Estudis Espacials de Catalunya (IEEC) https://gaia.ub.edu/ Gaia is an astrometric mission of the European Space Agency https://www.cosmos.esa.int/web/gaia- F Fred Rasio @fredrasio.bsky.social Astrophysicist at CIERA
Carsten van de Bruck @cvandebruck.bsky.social Cosmologist at the University of Sheffield. Love books and technology.
Prof Sarah Bridle @sarahbridle.bsky.social Professor of Food, Climate and Society in the Department of Environment and Geography at the University of York (they/them) 
Clément PIEL @clementpiel.bsky.social Amateur astrophotographer, interested in astronomy. Research engineer in plant ecophysiology at CNRS Ecotron, specialized in greenhouse gas fluxes and stable isotopes. Mountainbiking, hicking.
Astrophoto: https://www.astrobin.com/users/Clement-P
Mark @markmacleod33711.bsky.social Hi. I’m Mark. Been off Twitter for a while. Interests include LGBTQIA rights, Civil rights, qualitative research, art, New Mexican cooking, music and peace. Check my posts to see if we’ll get along (or if you can tolerate me lol).
🚫DMs.
US National Gemini Office @usngo.bsky.social The US NGO at NSF NOIRLab supports Gemini Observatory
users in the stages of the astronomical observing cycle, from proposal to data reduction. Visit our website at https://noirlab.edu/science/programs/csdc/usngo.
Hervé Dole @hervedole.bsky.social Astrophysicist, cosmologist, Professor.
Astrophysicien, cosmologiste, VP université Paris-Saclay (art, culture, science et société), vulgarisateur, professeur des universités. #HelloESR
(a quitté Twitter le 20/1/25)
Georges Kordopatis @astrogeorges.bsky.social Galactic archeologist
@ Observatoire de la Côte d'Azur, France
Jarita Holbrook @astroholbrook.bsky.social Indigenous/Cultural Astronomy, Science & Technology Studies, Documentary Filmmaker 
ESO @eso.org The European Southern Observatory designs, builds & operates world-class observatories on the ground for the benefit of society. More info on eso.org
Penny D Sackett @pennysackett.bsky.social Scientist advocating for the public good. Distinguished Honorary Prof at the ANU. Former Australian Chief Scientist. Climate disruption science, strategy, and communication. Living on Ngunnawal and Ngambri land. She/her.
AKA: @PennySackett@fediscience.org
Ewald Puchwein @ewaldpuchwein.bsky.social Astrophysicist @ AIP Potsdam
@cosmos4u.bsky.social @cosmos4u.bsky.social 
Jessica Birky @jessbirky.bsky.social Astrophysics + data science grad at University of Washington
she/her 🏳️🌈
https://jbirky.github.io/
Leonard Burtscher @ileo.de he; husband; father of 3; climate and energy policy Umweltinstitut München; astronomer with Astro4Earth and Uni Leiden; ADFC Garching
Benedikt Diemer @benedikt.bsky.social Assistant prof of astrophysics at UMaryland. Immigrant. Maker of Colossus, SPARTA, and other codes.
http://www.benediktdiemer.com
András Gáspár @andrasgaspar.bsky.social Associate Astronomer at the University of Arizona. JWST/MIRI Instrument Team. Debris disk aficionado. Classic car enthusiast. Opinions my own. He/him
Andreas Brunthaler @brunthal.bsky.social Astronomer at the Max Planck Institute for Radio Astronomy
Main interests are the Milky Way and the Local Volume.
Also found at brunthal@astrodon.social
Claudia Scarlata @scorfano.bsky.social 
Ole Streicher @olebole.bsky.social (he/him)
Astronomy, Software, Debian, Open Source
@olebole@mastodon.social
Bob Benjamin @bobbenjamin.bsky.social Wisconsin. All about the Milky Way.
Bryan Gaensler @scibry.bsky.social Dean of Science at the University of California, Santa Cruz (UCSC). Astronomer, sci-fi connoisseur, rugby league devotee, puzzled parent 🇦🇺🇨🇦. Opinions ∉ UCSC.
Santa Cruz CA, USA. He/him. bryangaensler.net
Cosmo Cora @cosmocora.bsky.social Professor in Cosmology at Bielefeld University (Germany) working on the cosmic large-scale structure, she/her
Karl Urban @pikarl.bsky.social Wissenschaftsjournalist. Podcaster. Hobbyimker.
Hier nur zu Besuch. Zu Hause auf Mastodon: @pikarl@reporter.social
Verantwortlich für Mastodon-Server reporter.social. Wer braucht einen Invite-Code?
Pengfei Li @pengfeili.bsky.social Assistant professor at Nanjing University. Humboldt fellow previously @AIP. Work on dynamics of galaxies and galaxy clusters. 
Thomas Kupfer @thomkupfer.bsky.social Professor of Astrophysics at the University of Hamburg. Member of the BlackGEM, SDSS-V and LISA collaboration. PI ERC project CompactBINARIES (2023 - 2028)
Esra Bulbul @esrabulbul.bsky.social Research Group Leader at the Max Planck Institute for Extraterrestrial Physics
https://www.ercdarkquest.com/
janiceleeastro @janiceleeastro.bsky.social ✨ looking to our future with NASA's Habitable Worlds Observatory (SuperHubble!) & AI
✨ studying star formation and star clusters in nearby galaxies with PHANGS, Hubble, JWST
Bernd Hoffmann @behoff.bsky.social Amateur astronomer, hobby photographer, PhD physicist, working for the government (#radon, #radiation). You can find everything about me on behoff.de.
Raumfahrer.net @raumfahrer.bsky.social Nachrichten aus Raumfahrt & Astronomie. Von http://Raumfahrer.net und aus aller Welt.
Impressum: https://www.raumfahrer.net/impressum/
Justus Neumann @astrojustus.bsky.social Astronomer
Postdoctoral researcher at Max-Planck-Institute for Astronomy, Heidelberg
Tom Abel @tomabel.bsky.social Computational Cosmologist interested in fluids and plasmas making up things in our Universe. 
Rob Crain @robcrain.bsky.social Astrophysicist. Dad. Tired. 
Jason Spyromilio Ιάσων Σπυρομίλιος @apolitosb.bsky.social Astronomer, supernovae, spent time at Paranal in prehistoric times, currently ELT telescope scientist www.eso.org/~jspyromi
Personal account. Speaking solely for myself
Chanda Prescod-Weinstein 🌌 @chanda.blacksky.app Theoretical Astro/Physicist:
https://chanda.science
First book:
https://tinyurl.com/DisorderedCosmos
BUY MY NEW BOOK:
https://tinyurl.com/EdgeOfSpaceTime
Blog:
news.chanda.science
all Black/all Jewish. 🏳️🌈/agender/woman.
Posts by/for me🖖🏽
Martin Bracken - FRAS -CitySpaceAstro @cityspaceastro.bsky.social
Martin Bracken FRAS,
STEM ambassador, Fellow of the Royal Astronomical Society. Astronomer and Astrophotographer imaging the cosmos from my backgarden in Chelmsford UK. Published Images in Astronomy, Sky & Telescope, Sky at Night & Astronomy Now Magazine
Sabine Döring @sabinedoering.bsky.social Professor of Philosophy at Tübingen University
Jan-Martin Wiarda @jmwiarda.bsky.social Journalist, Moderator, Fragensteller. Bildung, Wissenschaft, Beruf
Paul Ronzheimer @ronzheimer.bsky.social Journalist
Marie-Agnes Strack-Zimmermann @masz.bsky.social MdEP | Mitglied im FDP-Präsidium | Verteidigungs-, Außen- und Sicherheitspolitik | Vorsitzende der FDP im Europäischen Parlament | Vorsitzende des Verteidigungsausschusses des Europäischen Parlaments | Bürgermeisterin a.D. | Bikerin 🏍️ | Schreibe selbst.
Ruprecht Polenz @polenz.bsky.social
MdB (CDU) 1994-2013; Vorsitzender des Auswärtigen Ausschusses 2005-2008; CompassMitte, Präsident der Deutschen Gesellschaft für Osteuropakunde (DGO); Goldener Blogger 2019 🇩🇪🇪🇺🇮🇱🇺🇦
Simply Sepp @zens.bsky.social Former science journalist now press officer and science communications professional. He/him/dassöj/derdå
Berlin Science Week @berlinscienceweek.bsky.social 1 – 10 NOVEMBER 2025 | Berlin’s annual science & culture festival with hundreds of free events across the city.
Günter M. Ziegler @gmziegler.bsky.social Günter M. Ziegler persönlich: Präsident der Freien Universität Berlin, Mathematiker, Kommunikator, Fragensteller; stark beschäftigt, daher hier nicht schnell 
Die Junge Akademie @jungeakademie.bsky.social Weltweit erste Akademie für junge Wissenschaftler*innen. Interdisziplinär, an der Schnittstelle von Wissenschaft, Kunst & Gesellschaft. Posts der Pressestelle.
https://linktr.ee/die_junge_akademie
J. Brauns @joebrauns.bsky.social Beobachtungen ohne Ordnung; Wissenschaftsmanager, BBAW, Berlin
Wisskomm.de @wisskomm.de Das Portal zu allen Themen aus der #Wisskomm von @w-i-d.de, @nawik.de und @wmk-karlsruhe.de
http://wissenschaftskommunikation.de/impressum/
Berlin-Brandenburgische Akademie der Wissenschaften @bbaw.bsky.social Die Hauptstadtakademie.
www.bbaw.de
Christoph Markschies @markschies.bsky.social ... beschäftigt sich nicht nur mit antikem Christentum- S @stefangeier.bsky.social @stefangeier.bsky.social
Curiouser George @curiouserg.bsky.social Cybernaut
Max-Planck-Institut für Astronomie @mpi-astro.bsky.social Astronomical research institute in Heidelberg, Germany / Astronomisches Forschungsinstitut in Heidelberg
Impressum: https://www.mpia.de/impressum
Vereinigung der Sternfreunde @sternfreunde.de Die Vereinigung der Sternfreunde e.V. ist mit ca. 4000 Mitgliedern der größte überregionale amateurastronomische Verein in Deutschland. Am 11. September 2026 ist Earth Night!
https://sternfreunde.de/
Jorge Moreno @jorgitomoreno.bsky.social Associate Professor. 4th Mexican scholar to earn tenure in astronomy/astrophysics in the United States. Exploring more research heavy opportunities. https://jorgemoreno.org
Dr Becky Smethurst @drbecky.bsky.social Astrophysicist studying how supermassive black holes affect galaxies (s/h). I get overly enthusiastic about space (and cats) on YouTube: http://www.youtube.com/drbecky
Astrobites @astrobites.bsky.social Digestible summaries of the latest astronomy research. Written by an international team of grad students for undergrads! Supported by the @AAS_Office. #scicomm- T @teresaantoja.bsky.social @teresaantoja.bsky.social
Tanya Urrutia @astrobellatrix.bsky.social Astronomer at Leibniz Institut für Astrophysik in Potsdam (🇬🇹 / 🇩🇪).
https://www.tanya-urrutia.com
Jörg Dietrich @joergdietrich.com Cosmologist turned data scientist and engineering manager. Working on ML systems to support human experts in their tasks.
Andrey Kravtsov @grumpy1.bsky.social